Creation of skyrmions in van der Waals ferromagnet Fe 3 GeTe 2 on (Co/Pd) n superlattice
Abstract
Magnetic skyrmions are topological spin textures, which usually exist in noncentrosymmetric materials where the crystal inversion symmetry breaking generates the so-called Dzyaloshinskii-Moriya interaction. This requirement unfortunately excludes many important magnetic material classes, including the recently found two-dimensional van der Waals (vdW) magnetic materials, which offer unprecedented opportunities for spintronic technology. Using photoemission electron microscopy and Lorentz transmission electron microscopy, we investigated and stabilized Néel-type magnetic skyrmion in vdW ferromagnetic Fe 3 GeTe 2 on top of (Co/Pd) n in which the Fe 3 GeTe 2 has a centrosymmetric crystal structure. We demonstrate that the magnetic coupling between the Fe 3 GeTe 2 and the (Co/Pd) n could create skyrmions in Fe 3 GeTe 2 without the need of an external magnetic field. Our results open exciting opportunities in spintronic research and the engineering of topologically protected nanoscale features by expanding the group of skyrmion host materials to include these previously unknown vdW magnets.
- Authors:
-
[1];
[1];
[2];
[1];
[3];
[2];
[2];
[6];
[1];
[1]
- Department of Physics, University of California, Berkeley, CA 94720, USA.
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
- Center for Spintronics, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
- Department of Physics, University of California, Davis, CA 95616, USA.
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China.
- Korea Research Institute of Standards and Science, Yuseong, Daejeon 305-340, Republic of Korea.
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE; National Science Foundation (NSF); National Natural Science Foundation of China (NSFC); National Research Foundation of Korea (NRF)
- OSTI Identifier:
- 1657886
- Alternate Identifier(s):
- OSTI ID: 1706658
- Grant/Contract Number:
- AC02-05CH11231; 2019K1A3A7A09033388; DMR-1610060; MRP-17-454963; 11734006; 11974079; 2015R1A5A1009962; 2015M3D1A1070467
- Resource Type:
- Published Article
- Journal Name:
- Science Advances
- Additional Journal Information:
- Journal Name: Science Advances Journal Volume: 6 Journal Issue: 36; Journal ID: ISSN 2375-2548
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Yang, M., Li, Q., Chopdekar, R. V., Dhall, R., Turner, J., Carlström, J. D., Ophus, C., Klewe, C., Shafer, P., N’Diaye, A. T., Choi, J. W., Chen, G., Wu, Y. Z., Hwang, C., Wang, F., and Qiu, Z. Q. Creation of skyrmions in van der Waals ferromagnet Fe 3 GeTe 2 on (Co/Pd) n superlattice. United States: N. p., 2020.
Web. doi:10.1126/sciadv.abb5157.
Yang, M., Li, Q., Chopdekar, R. V., Dhall, R., Turner, J., Carlström, J. D., Ophus, C., Klewe, C., Shafer, P., N’Diaye, A. T., Choi, J. W., Chen, G., Wu, Y. Z., Hwang, C., Wang, F., & Qiu, Z. Q. Creation of skyrmions in van der Waals ferromagnet Fe 3 GeTe 2 on (Co/Pd) n superlattice. United States. https://doi.org/10.1126/sciadv.abb5157
Yang, M., Li, Q., Chopdekar, R. V., Dhall, R., Turner, J., Carlström, J. D., Ophus, C., Klewe, C., Shafer, P., N’Diaye, A. T., Choi, J. W., Chen, G., Wu, Y. Z., Hwang, C., Wang, F., and Qiu, Z. Q. Fri .
"Creation of skyrmions in van der Waals ferromagnet Fe 3 GeTe 2 on (Co/Pd) n superlattice". United States. https://doi.org/10.1126/sciadv.abb5157.
@article{osti_1657886,
title = {Creation of skyrmions in van der Waals ferromagnet Fe 3 GeTe 2 on (Co/Pd) n superlattice},
author = {Yang, M. and Li, Q. and Chopdekar, R. V. and Dhall, R. and Turner, J. and Carlström, J. D. and Ophus, C. and Klewe, C. and Shafer, P. and N’Diaye, A. T. and Choi, J. W. and Chen, G. and Wu, Y. Z. and Hwang, C. and Wang, F. and Qiu, Z. Q.},
abstractNote = {Magnetic skyrmions are topological spin textures, which usually exist in noncentrosymmetric materials where the crystal inversion symmetry breaking generates the so-called Dzyaloshinskii-Moriya interaction. This requirement unfortunately excludes many important magnetic material classes, including the recently found two-dimensional van der Waals (vdW) magnetic materials, which offer unprecedented opportunities for spintronic technology. Using photoemission electron microscopy and Lorentz transmission electron microscopy, we investigated and stabilized Néel-type magnetic skyrmion in vdW ferromagnetic Fe 3 GeTe 2 on top of (Co/Pd) n in which the Fe 3 GeTe 2 has a centrosymmetric crystal structure. We demonstrate that the magnetic coupling between the Fe 3 GeTe 2 and the (Co/Pd) n could create skyrmions in Fe 3 GeTe 2 without the need of an external magnetic field. Our results open exciting opportunities in spintronic research and the engineering of topologically protected nanoscale features by expanding the group of skyrmion host materials to include these previously unknown vdW magnets.},
doi = {10.1126/sciadv.abb5157},
journal = {Science Advances},
number = 36,
volume = 6,
place = {United States},
year = {Fri Sep 04 00:00:00 EDT 2020},
month = {Fri Sep 04 00:00:00 EDT 2020}
}
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